{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831117417",
    "entityType": "User",
    "nonce": "0x14edda463956b8c056baacf3224b948d97029822d0e2b7506d682e1b9f20e8ef",
    "signature": "0xc3e26090474078ea0c391601b56e2d707fb1aed806c9d2467a2ed898b73071b669e72f957e68d24a1479b123095da2e8df67cf4e74945af72623598c98c7fb9f1c",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}