{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145897505",
    "entityType": "User",
    "nonce": "0x25ca46f4f23fbd330e0014d7896f74f75569a83f41da12f3d0a1bbb4ff2e62ee",
    "signature": "0x3a265dbda58cef7f5687b899787cfd1b3534488e3edf074e4bc2692093d0910c66716a47599e2d267702a105416516ac847e302695d8d6899f60e750beb62f441b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}