{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe133c527b5763b2b6178838a669fc9e68b7fa80715363021c025b218dce67381",
    "signature": "0xde2acd895a32933ce6ed40e8fb94b81b615d1a97f3621b63ba608f8b0d1c88270766804170076bc66d34cec11edd5ceede3922cb0cfb993eec73dd24260cea221c",
    "signer": "0x546643B8F8164fB6dC42c93F65D31C17676Cd995",
    "userId": "305541868"
  }
}