{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1596991",
    "entityType": "User",
    "nonce": "0x8e1c03f74525a972eafb0baa73168df0e473c68cc07d570f26e3d448bf0a8a73",
    "signature": "0xdd96ec2c90a7347f87efdfb1a826fe4c722e06b4d2b661b66073122e2dcd813f353397fca39834810d8b26b54c260ecbc616f3555c7869c8927a56b709a21fb81b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}