{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294737",
    "entityType": "User",
    "nonce": "0x770fbd0b1277e9d1ea8ec4998c192b9ffc29bef6d04643c049eb9033acb5bdfe",
    "signature": "0x03e493c7434776f0ab20cf5ef45fc623028e3077667d9e6ca038a69b8fefec55583c3b94c18f3366d7e1db042019eb4ac5a89e2e51896adc17ae258112d9b3561c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}