{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215920",
    "entityType": "User",
    "nonce": "0x2679c4316f180fd6b78e9e7e08035b78f17d01a4b223631b629695ec5af028c1",
    "signature": "0x3d24ee4f3339053a53fe4f8d21fb557718be646ae13bfe5389dae888f34424fc4eda11044eccc9576290617528d3a6d21a5c7527ee42b7b47497250a590de0411b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}