{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "764",
    "entityType": "User",
    "nonce": "0x3c3de445a0ea0d7cf84f738f2173fae54db7e9344da9b807d2f56a64a25c6965",
    "signature": "0xde3bd8ef79146d34b687f9cd20aae237ba77fca8aaeb79e8292b5dfb3a2fff78429b6b7a714864762c1d935212ee8a1991182615ab5f8f6dd971cdabafc2f6c31b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}