{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf17b075f84571527ea531c1ed0d08c451f4d9cb21c27b575f22b4c553515c533",
    "signature": "0xd60feb514ebf0f6557b19c1bcb20f681dc4294c46d3d620d362cf263aecf777d7593d43f2096026df4459660e7a8016fc0ba454567ae0d3ba0a04442ef83d3d71b",
    "signer": "0xe91cA531AA10dbf5AeADf43B2e689863919e550E",
    "userId": "273714734"
  }
}