{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x2946e249c74c7b3bbab748464b29607c29e3f1106fe81e4458339b5019ee0a3c",
    "signature": "0x824a947d4250a928f08fb85cfc3a4137b27f89400ba42401d585f91117776867242ef2744655be729015a3d2746a562ad5c9e036ebfdcc1d1f4d34e42afb87ca1c",
    "signer": "0x571CC6D512D6f6fe43A3EDFE62123a52785d36fA",
    "userId": "388520"
  }
}