{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6da792ca7937bb40e70d0a29dfc42544ace677336b4ef092732f6a8f287fa784",
    "signature": "0x1d719d145d050981658e40d20663463549fe4bac1abfa11f40c6bd375f3e462e5379f67e9a76414a62b4526999343c9c2d64e36a0b7cb9d995947730eab2981a1c",
    "signer": "0x55E8eBB4B9aA0661848Eb3a724fE0860A3CF3D00",
    "userId": "907870351"
  }
}