{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x23647ce7923aabb541876bc63473f7323c3a55ada9cc5e31da5d7ec71f9f6b5a",
    "signature": "0x7227f2901776b063ce1848c8d7fd8ce78e1a34d3a3d1b5e3aabaa4f0b80de77f07d346722a363496e3bb8608ecbde85c25f7930b1c44a26a237d162f4b6ac2ce1c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}