{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2400",
    "entityType": "User",
    "nonce": "0x3763bb5a52eb83867193ca6030b3ed50169248e9709739a3940122c50d448162",
    "signature": "0x5a7a465c555eb2abf9d2ff3a3dbd582cba6e2a3b0e65498e7cde0198d1307c952bf21f05dfc09cb511644d3c906a23fa3f8534b8d0005b0cb3224bc787b7aff21c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}