{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1839428",
    "entityType": "User",
    "nonce": "0xff3885c9d9025fc64e9f0e0f48eda611604409d2c74648cf30829e720cf0a9f5",
    "signature": "0x4503edc5930f378c1bdb1fe62e1a010bf2ea0b0cce4c0a57c2f2e54685a989ec03157d0d304e849d795f87db832ac1a88ca668b0dfc84ae94a8b5e76124c31e61c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}