{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x6873691562caf3059571020b184a3a38319933b7619c71500ab38ecd47892c9b",
    "signature": "0x40cc2d2dd05d2f0264ff649949ac41a34e85dabf819ac3d3ab66e016067b336359046bd5cb8672490a3404996a7d35f6feb23c6b487d74a813912955fd10cc191b",
    "signer": "0xc95EFE880463dc9E6fC74760701bBb0A05704C9c",
    "userId": "95927626"
  }
}