{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x14bdaf5af9f4185c6476645bd2ca8a59ac2123628392dcce60e115627694c9a3",
    "signature": "0xb47c2a3973bd98611e812445123118c333858717fa3a8c4093fea474397b575456d5d2ce1344faa2b0b20e5d9fe46831966f6c2f0e43305083b2771a8c9c5d801c",
    "signer": "0xdfcc4d06D5B8A0AF1AF77B1Ec434e5F50B625a75",
    "userId": "620921422"
  }
}