{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777260",
    "entityType": "User",
    "nonce": "0x13666ca9f4a42225b36a8e741e15ead84a287ef0532192072a1f365db0d67a4e",
    "signature": "0x647ddf8bd99b1676cb6cb7ef9b1310ef283f7fd7b4dc357c4d946a83dd4a83d013375e9ffa70379e4e9f7400edf92e7b88be7147fddcb68ccbdb1faba7e45ed81b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}