{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0x59e0006f62708a9ad94f34e1c14e455765fa74aa2fa1d8cdb9fa592875b6a500",
    "signature": "0x5beed8e398fe9a223989ca8c72128be2127c7cb597af872ff1e9e3f17743fcfe56171a9782309f70085a52f5b35a0bbfd76b562ffb1a40e578aac844388267d21c",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}