{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x37e520a8bd71e92b3737eeee0763aebfdc7e3d47af0e85891d47412f9e817170",
    "signature": "0xa36912d51a8e8d66ffe7c00cbe113c989054417976ee981e816df1802d7db1e730f66db4a82660f40c5ce4fce959ffe94ed9c23d38bed4589c4c9a7a0aae431c1b",
    "signer": "0x5cf424b2E500Ce62e5776d2Fef3867BEA5A0b58E",
    "userId": "465666777"
  }
}