{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618688628",
    "entityType": "User",
    "nonce": "0x1362a082905a9372fa124b812d21f4e7db393f608fb5ecb28ad2ecd962238d22",
    "signature": "0x8866b0e99391ab7e2ac7ab55338b5ecee7f08db2e68ddaa2da3460cebf80b07508d2e673dbbd964c68b159c74f4c9676c5dd0f7055b1bd69130d16813ff7c9141b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}