{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12686",
    "entityType": "User",
    "nonce": "0x900dc587919e1ff2303ba8e0b7cb5bd74fea9d48116b70058f7967d67e5f4592",
    "signature": "0xf96ef24af1042192721046a314a1d4a3c6d3d04d5d05280cf0751fd68feebd4829723eeab1358dadd50f6fe8f3d0c0d45a866d42f00900935a5aa742cdf60fc21c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}