{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "806873848",
    "entityType": "User",
    "nonce": "0xa8c4a0725954190885908797a3b44e930b8c7219c03b42ff1b0a2d2e2699439c",
    "signature": "0x58acf4917cebb562967f3d8795497e7cf25eb9393aa3ee8febcfbb5acb9185f3593d4b48a394ceae2449137ec25e199b4d13b6a16bf440bb3d2cd3c366d40a341b",
    "signer": "0xA213cA1de66B976a54B3975E7f61eabF3CF196A2",
    "userId": "353372364"
  }
}