{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x80c3d0df0c9eafd55ce0ec89799bd41554c0b22119e0bf43755e874fa13c68b7",
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    "signer": "0x4fADC28D15fC4B42A6ab378E5b6155d0b8F33aaA",
    "userId": "372589391"
  }
}