{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe9e639c94d0b6082b3f939afab97c1a0732ea4da95237ecd7955fd748f5e93c5",
    "signature": "0x40f4680b40983d39023120ddaa045840f39237401bf75eac35ae08330268f7be6b06b675327aedecab66344bd33c2e7301ba4f618e013b2341440fe7e18659a51b",
    "signer": "0xF403Adea2D2720f2D08253e476eF38C547d773e8",
    "userId": "175810824"
  }
}