{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648443373",
    "entityType": "User",
    "nonce": "0xa6fb6b9d5f30cff7a3d1d662dd35c183886716f62be77c5fa91eaa0640f5608e",
    "signature": "0x0efef402e2da3ee2f33668d4d703ebd5f21d89423401f52da01964aa1710855942eeb21b292fa6693c7b68442bbb2b4974d578dc473a14d8f2d8f62b7747b08f1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}