{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xa5910baa8ab6354f3a41eaed7dd6353b80d148957f71372633af89de0c2ec088",
    "signature": "0x0313051d906f1b556e8c0ac23b6f3d6e8ab3e7475800aea7a6ad899dbf40d6eb438afe926a503796e4dd92ed477f7adc9bdb9707e2a570fb4d2d722a960572181b",
    "signer": "0x88ad765B72fb060B3adbae1FA44A6C64722E1781",
    "userId": "236177"
  }
}