{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xc1790cbd64c9dee231387b3399f0ccebe9a59652040cfa61fc3a87c9de1e2f00",
    "signature": "0xa7e86d2f18791bada719aef09a790420417efccdded62f5a243412d3f730506c48161e0b8e20a2c67503808d64ddff1a8c49fed122329bff312d21b8e2e46ea11c",
    "signer": "0xd20e05DF5b8cb1e52cE88D75a2f412Bb8a61930C",
    "userId": "531366111"
  }
}