{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa287b4f1e07e2ab44d6b11a3ab3e8b91a85e552ea3ed41e75a39328525026931",
    "signature": "0xd6763d57966129330d9aa65e907b13d6105a44215876a7dea3a95675d5fdb9240de2954d2beb23b4c82116565cc4b3c82b1b2507ca0633bc8b5da1c13625048d1c",
    "signer": "0x7c4abA507Cb54290aeECcBF5F87e029413a20414",
    "userId": "320968767"
  }
}