{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4ee8b406268ecd209694a9bad9175c9b0e6132d86c5c0857a674d7d200265ab",
    "signature": "0xfb1f25673daea1fb3459ab4fe10ec574f0e1dfd088662fc7d85528081d2a2c0d7e0fcb6c0b72c32e9c294e27911b6d3497e3dff30f2926789c1c8212b7ce9fcc1b",
    "signer": "0x1fa12Aa1f430Cd8d16FfFA989B8784f1dB6Aa6Ea",
    "userId": "908859748"
  }
}