{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3143c7a16ebb65c2f56e23dde842832800aea3f2dd27ac56b9a03a26101f7801",
    "signature": "0x5fee7067a6d1b5dedc5aaf0f482cc04da1e3dbb078ba8a9ecb80c4be2592df081413cf83db9c7ef7d205d057a85e2eda62f2aa259f0e4f2e99a5bf0866622f491c",
    "signer": "0x2a438681b9bFB9BD3977e4FE61c8F157884af4AE",
    "userId": "362429546"
  }
}