{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d6bdc86738bafd1d8ddd6631633b4a8ab31faaf24421fecc5088ac364898b8f",
    "signature": "0x68be50ed30e5bdf97afaa1526259fcea0d775ef5f43c9e16efef5dd1ba94b9fc58fec8a8080f8508dc0ba4e5f62ad27b862db0322edcbb5068dc43a9f92ac4d71c",
    "signer": "0xd2Ce5Fc4bDc7FF0498dA0Cf074b1b037fB09b8dF",
    "userId": "955716813"
  }
}