{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203752",
    "entityType": "User",
    "nonce": "0xa6e2988205063c0de2af7ef1ef06eb8497da0f4eee9dd0619a0c8664a138e89c",
    "signature": "0x17a7948da19b0028be98baeed72538b1af7e8c0d7c86bca483948ec4cbad85a40fcd95d3012163f13f1b2e5b44587ae94b3d6f4f724234879f15f9b87482b5f01b",
    "signer": "0x881DC02014d371dB5F53a35eB20019b0253C7d40",
    "userId": "637221900"
  }
}