{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x18440aa8a657cc754b20c9f6b7e11de0b64774b6833b474ad3a2d77432cb4fcb",
    "signature": "0x4a9229c1102b1d85daa6ac2ac60ab350b4336f32532908ca60f62603fe41be09544c9b6289e5e542bbf6887dfa778308f75210c24e83775baff79e517a28bac11b",
    "signer": "0x7a3b33afbBf9762d6309Cf2e1a4910e4c4EAA6f9",
    "userId": "65846854"
  }
}