{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x0c9c84c5725b600335ced6016672d4bd8013511625610c3233f22a298987f5e3",
    "signature": "0x94844b7a440f2ecf2e61a469e9c22610846e775234d2f3b25a91abaf320a88635405732c9004b675b3438862d38b733bde7de556f2a24e354c1335a2510ffcfe1c",
    "signer": "0x1c4Ee34565eE3A8304706138026D7518821F356F",
    "userId": "584804802"
  }
}