{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "975218829",
    "entityType": "User",
    "nonce": "0x6378194ab202ee77b1c248ced72e33dd71535ac7864d71a92144475a2c52a7a5",
    "signature": "0xafdc86a93743bf88c537fe0c789efb41cb4f0d102b052056b26e96e96c015db46b79b290f57087b0757a35c830e5b12f7f4a7eae6c2b779135de2d655580d5d31b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}