{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328894",
    "entityType": "User",
    "nonce": "0x893daf18bedfe2199f7e452109d74aea7a9cc4605aaaecdbcc9d80b8f20d6c0f",
    "signature": "0x9872ec697b599ec982cc549b36bc9c35e701202976763ba887fa91367a0c31d635579536d49f88759ee974649da0363cdc27b4f710dcffc7890fee300d0373aa1c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}