{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf1bffffdc3e0f0e564aa3b685765504c6c642ab225841ec5281905d1c99f4885",
    "signature": "0x64cdebb6bb98074872f6fb8a8332b39fd4e28af6d95ef307c08b0c5b078f3aca13a8641f439e625540aa54a0b1c31f135637424201088bf9a0a0f00789a303ef1c",
    "signer": "0x50F0B86F035C6739330E1b1F346a808Cb36a09Bf",
    "userId": "365829862"
  }
}