{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19009",
    "entityType": "User",
    "nonce": "0xf0a1b1ed953249bacc4d5bcc16e9839cc61a168d385fd96f4f0afb5969757a51",
    "signature": "0x56fc3e492df2c83c98a92147df6aabc794c0429df9da2371fb1e1aeb5e55b38505255b23820e0c0c7f5ebcac6b78127609b7101750f2976f8e3db8fa007d9bdc1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}