{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73678",
    "entityType": "User",
    "nonce": "0x8581a39469da2af93713f9618854b9bf52b9b5eca8fa6a2569af53da2618beaa",
    "signature": "0x66c3a9f708ecd25b19b99233470f5fa9f45b141857a9ac747d53c7e8c23a036e2447fd68466e4fe98052dfd20e075c062a78b34c97cd369d7fe1c1aedc2d5d221c",
    "signer": "0xdfF45cF595BF4BB83c5dc28041d854710aA9CF7b",
    "userId": "380429513"
  }
}