{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906184213",
    "entityType": "User",
    "nonce": "0xe10b2817d936b40a7a31e26d4a3d1f4038d06e83ae7475e214226687b3aa2fce",
    "signature": "0xad49f29d54525209da05716ac7d72d40ef0e8f660ff2acaebf629336b280b53d6d3355466c1d3072fee628a0811c77461bb9617fb16b974d2ba6397e51b860bc1c",
    "signer": "0x53f39D73a2dd51E9e8A362EF3b1383072E37cf26",
    "userId": "74209883"
  }
}