{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139975954",
    "entityType": "User",
    "nonce": "0x9251f175600463f7d369fcaf0be0e798b9e77096c4a3d5ebb7d570500b1f7928",
    "signature": "0x23915d8432dd860093a22f51efcf04d040c45215dfff4dc419972011f3e58e404ed24efd073d916e444d376d3260213196a7f22b1f0898d264316ce40f2b64901c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}