{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x66e63f1ab62bcc565028c6e0617bc9b728f79106cae6018951cc42686633580e",
    "signature": "0xdad1c6c9d0ae5943273e2809822517c05b9bd0d531a223b388e92342a40c22d244b0db1ba678b7cbe9bc035c94a93f8a8fb3857b2897e60ecc0c7cd20a05f22e1b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}