{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b7c5ed21159883eaa1e58d0189e2ed4b88bd1d7371a891d34ffa9e5d948799b",
    "signature": "0x8a0f5f4125ca9b93aa1e9480b32c586640c1552a55a76709a4d5c396b09821e44e742b24226b24185956c35de21ff25067ceb00eee768188d5f90bb3c5728ea41b",
    "signer": "0xc178669440eF3109Aa43E5D2cdA43F632f6587FA",
    "userId": "641081592"
  }
}