{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3909f689fade48cdcaa36839da60a524cfd88a1cb36aa46f987db5324a08063e",
    "signature": "0x461a69003982d1350d22bd11b89465e39e9da40b9890757887bba628cb6c7202781ecb5f1b52513c29329ff7907f40992bca7e70b49f5334d9d56012f3e756f51b",
    "signer": "0x1858AFF8EcD0C2D3CA6E75F3fe11e31FF7fd2e0B",
    "userId": "146671017"
  }
}