{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "819568368",
    "entityType": "User",
    "nonce": "0x93eda6503604c59ab9a572ca6be42df2575d6f2ecb463251141b39a916d50875",
    "signature": "0x9f76ae515be5b67cb712f107c2f23fc3ac97cf96998c7d95e192fb0f122727af3fc680b0e2f28a0e9e2caf2c7e98391f5ca3c3f5acb353d7696bf30d1d08fd4c1b",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}