{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xf6f3e1e7155e66f857149b333dfdd7d06ebb9bf277c15776059529c2575c5234",
    "signature": "0xb162062d922a7dc32a389a37f8cc987d98aa69eca054fca3167a14c48a378f5d20eab5d26acdf9be97acc0b0980c23ead4eca3d43c30516e82b1eb0f7dd987f91c",
    "signer": "0xc7713Eb062b586364a25beaaBccc93E21Df318c0",
    "userId": "269788074"
  }
}