{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307002",
    "entityType": "User",
    "nonce": "0x6348e2c80bfe0a3195f7ca3fa9b8999acea02c1323a541ec1b882d82b6fbbf9b",
    "signature": "0x5e8023e27029bab53e43ad772974359e6efc6493ba7aa64b9ee4ae47271a91220ee6487d9f292c50e609f4552f611d4790d52ac420cae1df770fece3f4c387c91c",
    "signer": "0x8b0835F94A735A9d87863C553552c6f277709234",
    "userId": "940831456"
  }
}