{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319106",
    "entityType": "User",
    "nonce": "0x5f89e1e3a75ba7e3ff7fba79f7fd34aa8712a1a7fb2f9ed546910e28662448f5",
    "signature": "0x8e8dd3293b305effe874bdf480f90ff0bd88ab2df06b72fe72b163ff56a0718042b9ef35d1a0649db5aa3001c4c7af0e1c6b9abf82f0a10baf4a4c7ae2472ae61c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}