{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2f5ee7435c5997c17ea2c96d6d0102f0b04835f3736c359525e2beb466e9c256",
    "signature": "0xd1d22c6d5d0d9a19f868164f5984603c078ac5dd7059239e3f4d3934dd12ce36148fca0f4d0256e9b283761ea8f5c4257e6d766fd72dca4743395104cbd90a221b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}