{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54255",
    "entityType": "User",
    "nonce": "0xcf302935634ed6f65f4a9787e672cb3602d2e46492d30f15f38a984575f2eacc",
    "signature": "0xfa14f248c66c34c8ed2af1f09dd7fdb339cc0b90ebc9ecdd57cca4796840c9f30e242c6125174a8376a06aaadbd80e64fc458483ebbba0920507a41ad15a66231c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}