{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xc5359b0b6341f4c512ffeb69698129199474bdebae1a70dde39b5c29ac996f0c",
    "signature": "0xfc56b0d78ba902bf8a4e316643b16b4c708bf3a3a1d81aff150a07c7db4d57c23581470e905e71459533834e4739d832239669da89a1f5990082d275f5f6b37f1b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}