{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x7d919c13d54f3a39813e472da5434b74be0910e1a8aa674d95e9d948a1b62a1a",
    "signature": "0xbc2e79f50b8d75fdc9d874cf91dc17ccd6b03b1dda2a848697eea261dc734dd51e7bcf062601ec107b875b734993f6e7d0bdf65e9bed8524c0e531609753ff471c",
    "signer": "0x887ff90b6e9a2F5c6Cf1E862028545C66FC95d72",
    "userId": "141224956"
  }
}