{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212145512",
    "entityType": "User",
    "nonce": "0xb88fb407ac7ae4d00f6b26c9b2ff43e79817c531811e090303005dc4ea994266",
    "signature": "0xacd0b3829dacadf062a3ee62a7cbafe3ec4d6401ab511aa8b23f430e4a478ad21ec53b9bede0d0a7a7e9876e5e69b3ffad00294d6db4cd61183d23fd5f846d101b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}