{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0x6b1446d7b5da91feb216b39c77a4956c017740b917757e900821482a27a94c38",
    "signature": "0xa96e11d643fdb4a4a31d68d9a7053ed5794c2ebe4633ca2eefc1c921e75df48d06407c8e4337a31c9aa712609cadad250fb54d7cb8f70b9349d4bc1f8a84e88c1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}