{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x485e75f3617b3e6d31d89bda1a92453ca37544df638622c30c0d8bec38ba4842",
    "signature": "0xffead9ab725856406f90f35be706ab0199f3ddb0fe52e9b56ad9b33eee3b475b3d705dcf0a1b0ce171d2bacca40303b9a33f6053495369e5a82a677054a1a6ed1c",
    "signer": "0xf2d4b2b37628C77505F82634cE2a8036b015000d",
    "userId": "227466886"
  }
}