{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61809e7b9e19e28b871e869ff6114a0d68a98c450c3e10eadd5bed47d0a569ec",
    "signature": "0x4cccc7069f8c6dee5ae2b9b28671abd840426e3bc006b97409498fb0878cb74d3a9128484658dd6a1cd3d0959b1f522f080e441498aea32a99727de1bc3b2d691b",
    "signer": "0x5Eb5AA989691dfe5DD4173C5CBf1Ec2f5AbF2415",
    "userId": "779754337"
  }
}