{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe561c7f96c720ee7f726a4abf10cffd63a7b5203722abf4bbf466e3e8966b9d8",
    "signature": "0x64ba5e9c7534f9ea9eea3688992d217c06e4b5a01e0443cb127bb7a250aff9a8261a072ce642aef38e9e9d50118a1e5644190abb97d7384e559c4c994430ba2c1b",
    "signer": "0x55D0999E33A665939169997a941a4AC34c8Da445",
    "userId": "108591871"
  }
}