{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "89625",
    "entityType": "User",
    "nonce": "0x1888a0f2644cb6ad274139e5be3dfa11e464ab61f11914b58f4221e669e0f22e",
    "signature": "0x2a4e1a4846719f6fdbc300d1437a25bcc315de5c10a85cfcd024d7d5a920d1f97e691439100b82413006a3028b0d97540c5491c0cac8536161968deceeff3bef1c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}