{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7e3e3d3c6fe07d07174953a6cedaaeeb11a81341ff830f3018f3bb1d3aa83ff9",
    "signature": "0xc9e36b526792176090ab03c7da9625e1a7f62ab4eb7f27b3918308228abebd6d6733db6753da4ae12b567026c8902eb805fe05fa8d09d947c4f34befb01556391b",
    "signer": "0x29BEc2675DD0a0e5034749E3958D2a0A78C296ef",
    "userId": "7338909"
  }
}