{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xef12028f56d35402f641bb4b8a38bcd5d26d351658be7dc312e66a659bc8c571",
    "signature": "0x8bb0b93609351e0807812264bb9c25c3794577aa5ecb182105308552159ba7b340dbab16d4b81a97478662fd40ee72e3b15a506de7e01f42e79c7ac9ee3a6a201c",
    "signer": "0x0DA81955e67310452357074d6ee39703c163B4B3",
    "userId": "122499259"
  }
}