{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875153781",
    "entityType": "User",
    "nonce": "0xff1805a981a5bc3d2b0e396b2400350163b5f9daa511e96e4220804d4a988c33",
    "signature": "0x4f57865d33b5b87148329dced3b50111b9a2170b0de629d077f9fa74ef72f3f43dd254d473ec42107e674e43dcb4c77eb7d6ece8b32d78f6f82b4911b321401a1c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}