{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x566135b52de416bfd2b6188626cdd9b6f2e0dbf79673eab7540392f3f4241b83",
    "signature": "0xb98d07f7c71be9c51e84aae2d2b1da9800a91808c01ceb72fce52003db8c3f35236830f210854f2fef0fc1af0d94afc29d52bcf332c8a1d2257228634090f0fa1c",
    "signer": "0x9be428b83c69Ab7278342767c9062d747a7f6399",
    "userId": "879639434"
  }
}