{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144585121",
    "entityType": "User",
    "nonce": "0xf6daffab6e2a20b7205a82a4fb20ac4e4936e955c8ff2a3dec8fd5131ac0f979",
    "signature": "0x50853f3751b252d9c50ea22be3ab3fe8c7a89108e8db93914da007f40a517c3c1f0a557dad454ff4b94b87bc4109c1b67ba391404090c6f448213ecdad55b6251b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}