{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343169",
    "entityType": "User",
    "nonce": "0x78eae3f8cae726dba6b88052e6ac3335d04cc1ea41b864064619b6dbcd78743d",
    "signature": "0xa50a840332741134b11c33fb5f4b9f1c685b24d500ebef9865fd5e6b2b520c490f7212efe6bb28b98da1c87228b431dbaa60ce4f7017dffdeffd05f8d39dd8b61c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}