{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987199883",
    "entityType": "User",
    "nonce": "0x41aeb28fce46b00454b98c67fb1c3196e99683b4e7d42664f7f6dd357fddffcb",
    "signature": "0xbda73baee05ae348ed59962c8ed2744be6bd3118cd432873d37c851f5d2680cd209704c941002855968ced08ad0b92cb3a13268009d279e8e43c54485231b93e1b",
    "signer": "0x1c4e2947b5F9FA4A927a23897193150631C1DA35",
    "userId": "933435942"
  }
}