{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148293",
    "entityType": "User",
    "nonce": "0xd449db6b9f7d80e56696283ed5bb1397d0f00bc6ca916e731094371703a3a375",
    "signature": "0x9691f60bb014e804b56367b1410ce9d5069b45d66b6e4afc8429bb2bb7dfd72522f972de20ac27eb46551ed59a93b271f767e69942ba4466911476d722e83fc01c",
    "signer": "0x6A29a28652c5866aB50f6690188bB7D36a01CB9d",
    "userId": "645940872"
  }
}