{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2482a11745dac02bb9ca07ae215241e4c9bf2c319c2c5b9974ef43874e7885af",
    "signature": "0x4032e2b60682da42dfbb9cc24fbc06ead355e198b82b22bcd866ae67ccd6ee535dd71a97b26db59546322b9b56432be2cc3c31edb1b5f033ab5ffe5f3c16f6ab1b",
    "signer": "0x77a1439B3FdE340C82aF1Da36939e1fb9d7D640b",
    "userId": "977332529"
  }
}