{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "364447",
    "entityType": "User",
    "nonce": "0x4206f1d761738326942f7c3c59567aab23ce260e19481400ee266a1be6d9b65f",
    "signature": "0xe6e2755784c5fccb4f4601e2c6c2b45f4da53848d490126d3b62a513dbc2d3f0233748ecf3cb80bc6a6ec3282d94510cce23108b12c004311be6c3eb13f1829d1c",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}