{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377463",
    "entityType": "User",
    "nonce": "0x7103fe567b604fab08d037b91dab9211d77c8dd5ecf4335f4456bf3a5d487051",
    "signature": "0x3774d80fdb39a8b470b87eb1d55624742d082659f2663884641c12cde3f58b995c9ceba47a8afef3e55d6e44e717a2bf71f55a73676cecd34b5564518afdf7871b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}