{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4e2eeaba0b8a5dd5c747f8fbc77e8c27ac5d3f38e7094bc9496087c2251fe974",
    "signature": "0xa574d8e36fb6fa54c9dadecdd7e609cfbc64422ee225efb232efba2f0716e20a59d2ae1ebd8434a5777bd95ac65ebe729b67d456b66c1d0c13d8d89575fbeceb1c",
    "signer": "0x14f9663533877B7020De0E64a2f7ebF9c62aB272",
    "userId": "969917261"
  }
}