{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "35251",
    "entityType": "User",
    "nonce": "0x377ccd55a507b6bc5ce2aca529c1a6a4cacf7caa3545e26bcac5aca37329064d",
    "signature": "0x1b4174abd99bdfc71f1903bff59a5bd06eae6e2ad3dab2e2cb69334c26cc2a2335ea37bfb8dec7eb2c8b4a0495a665b8e3811483425274cdb30a6836f5ad40501b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}