{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699855727",
    "entityType": "User",
    "nonce": "0x53f71e872189107f0c877b77b9b018ebc42c66519a33521947d72d4454729829",
    "signature": "0x8f81430dea194d3e1f1841131c388da7d08e1b0fe183123d60ba6badac53857d5b0bf6ced42991910b9c36928b9ee7787ea510b051c640fefaee8de6e6470dd21b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}