{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe2a0cf7bf226b06f18549e3c86f1219fef6cf2b90560b2f37dd7e31597492f3f",
    "signature": "0xb5b039b0f9577a84a8d4f1e544feb130a4e3940c62714450619e1cf914ed3d16532871057ffbe9792a6665a816157f1b7708af3de09db6047dc47945894fe07b1b",
    "signer": "0x19c64Cdece29Aa5fAe3063bDE21466119A613cfA",
    "userId": "691763852"
  }
}