{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xde9cc685df9c0ef6e8c884cf462403c763311a0459bdb4262417b05752846f7b",
    "signature": "0xcebfe007edc89308b59af21af8b864dd20729091c2739e35fabd3489b4bd273c6069e3e29dcf8070fe5a96dd74b3b49c48e87ff8e7c34d795974b66ab6e994521b",
    "signer": "0x09Ed944A6653804DF5E864d5240c837F643E2c0F",
    "userId": "214509563"
  }
}