{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125737",
    "entityType": "User",
    "nonce": "0x755f791f36da2503ebbe8ef0c05f4c2bb5b5c4fe71938f32b4a850c095aa86a0",
    "signature": "0x983a06eb518defc200b3f222065540fd3959ba9cd2fba8e390ef2bae613411665270041015290f676189562afcc33d193799ecdfe067e6202ad0f96fc0005ef81b",
    "signer": "0x5825943B70b58adf2D3Cac06E57e695F8650cFfA",
    "userId": "901870302"
  }
}