{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18168",
    "entityType": "User",
    "nonce": "0x7bf283017af067ad0e19169020551511cb6433da5f8970085dc3e634f43886cb",
    "signature": "0x3b7cdc5ca0b6addcb1f30adbacc51d80771506b3d49dd4e64f7658d201804aa41e00b50c0af4a368c8486ca90de15f9dc8b85fe4089d24fb817a85e4842fcfc61c",
    "signer": "0x4b1A8281F6C7611C75f6c44f1D3B258B0143F613",
    "userId": "513956582"
  }
}